Modular construction equipment and construction method for vertical rolling mill foundation

Abstract

The vertical mill foundation modular construction equipment and the construction method thereof of the present disclosure relate to the technical field of metallurgical engineering foundation construction, and comprise a platform foundation, a prefabricated column is arranged on the upper surface of the platform foundation, the top end of the prefabricated column is connected with a prefabricated joist, the lower part of the prefabricated joist, which is rigidly connected with a prefabricated connecting special-shaped beam and a prefabricated connecting special-shaped plate, is provided with a pre-embedded steel plate, the prefabricated column is provided with shear-resistant steel bars for increasing friction and gripping force, a neck-changing column is arranged on the prefabricated column, and a first reserved tension hole is arranged on the neck-changing column. Through the design of the platform foundation, the prefabricated column, the prefabricated joist, the prefabricated connecting special-shaped beam and the prefabricated connecting special-shaped plate, the production operation and the construction operation coexist in the construction site, the conditions are complex, the assembly type construction is adopted, the continuous on-site operation time of workers is reduced, and the safety is greatly improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of metallurgical engineering foundation construction, and in particular to modular construction equipment and a construction method for a vertical rolling mill foundation. Background Art

[0002] The vertical rolling mill frame and motor foundation have complex shapes, and the cast-in-place process is complicated and the maintenance time is long. The upgrading and renovation of old factory buildings are under very harsh construction conditions and are greatly affected by human conditions. There are many types of professions and structures in the construction area, which leads to many construction changes. The construction period is often very short and the project volume is large. Conventional methods have high requirements on the construction team, and the quality is difficult to guarantee. In addition, there are disadvantages such as long concrete curing time and large errors in the position of embedded parts and reserved holes.

[0003] In order to overcome the above shortcomings, through research and experiments, the vertical rolling mill frame and motor foundation are decomposed into several module foundations for on-site splicing, which can overcome the above shortcomings and greatly improve the construction speed and quality. Summary of the Invention

[0004] The purpose of the present disclosure is to provide modular construction equipment and a construction method for a vertical rolling mill foundation, so as to solve the problems that the vertical rolling mill frame and the motor foundation have complex shapes, the cast-in-place process is complicated and the curing time is long, and the upgrading and renovation of old factory buildings is very harsh in construction conditions and greatly affected by human factors. There are many types of professions and structures in the construction area, which leads to many construction changes. The construction period is often very short and the project volume is large. Conventional methods have high requirements for the construction team, the quality is difficult to guarantee, and there are technical problems such as long concrete curing time and large errors in the position of embedded parts and reserved holes.

[0005] To achieve the above-mentioned object, the present disclosure adopts the following technical method: a modular construction device for a vertical rolling mill foundation, comprising: prefabricated columns arranged on the upper surface of the platform foundation; the top ends of the prefabricated columns are connected to prefabricated joists; prefabricated connecting special-shaped beams and prefabricated connecting special-shaped plates are rigidly connected to the prefabricated joists; the prefabricated connecting special-shaped beams and prefabricated connecting special-shaped plates are embedded in the prefabricated joists; the prefabricated connecting special-shaped plates are located between two prefabricated joists;

[0006] An embedded steel plate is provided at the lower part of the prefabricated column, a shear reinforcement bar for increasing friction and gripping force is provided on the prefabricated column, a variable neck column is provided on the prefabricated column, and a first reserved tensioning hole is provided on the variable neck column;

[0007] An embedded sleeve is provided on the prefabricated joist, a shear groove is provided on the prefabricated joist, and a second reserved tensioning hole is provided on the prefabricated joist, which is in the same axis as the first reserved tensioning hole.

[0008] Optionally, a third reserved tensioning hole is provided on the prefabricated connecting special-shaped beam and is located on the same axis as the second reserved tensioning hole.

[0009] Optionally, the prefabricated connecting special-shaped plate is connected to a fourth reserved tensioning hole on the same axis as the second reserved tensioning hole.

[0010] The construction method for the modular construction equipment of the vertical rolling mill foundation includes the following steps:

[0011] (1) Production platform foundation;

[0012] (2) Place embedded steel plates at the bottom of the foundation pit and weld them to the steel plates on the shear grooves. Then, set shear reinforcement bars in all four directions of the prefabricated columns.

[0013] (3) Then insert the prefabricated joist into the variable neck column. The first reserved tensioning hole is located at the center of the prefabricated connecting special-shaped beam and the prefabricated connecting special-shaped plate. The rolling mill foot bolt is placed in the embedded sleeve to ensure that the shear groove is located at the lower side of the prefabricated joist and fixed to the prefabricated column.

[0014] (4) The second reserved tensioning hole and the first reserved tensioning hole on the variable section of the prefabricated column are on the same center line, the second reserved tensioning hole and the tensioning holes of other components are on the same straight line, and the prefabricated connecting special-shaped plate is firmly formed into a whole between the two prefabricated joists through the second reserved tensioning hole;

[0015] (5) Clean the surface of the variable neck column, keep the first reserved tensioning hole unobstructed, and check the flatness and size of the shear groove to ensure it is on the same axis;

[0016] (6) Finally, install all the prefabricated joists to the prefabricated columns, and then embed the prefabricated connecting special-shaped beams and prefabricated connecting special-shaped plates into the prefabricated joists. Check whether the welding between the platform foundation and the embedded steel plate is deformed or de-welded. Fill with grouting material after meeting the requirements.

[0017] Compared with the prior art, the benefits of the present disclosure are:

[0018] The disclosed modular construction equipment for vertical rolling mill foundations utilizes a platform foundation, prefabricated columns, prefabricated joists, prefabricated connecting special-shaped beams, and prefabricated connecting special-shaped plates. This prefabricated construction reduces the time workers spend on-site, significantly improving safety, as production and construction work coexist under complex conditions. Furthermore, by breaking the foundation into several small pieces for assembly and assembly, the factory overhead crane can be fully utilized for hoisting, allowing for simultaneous prefabrication of multiple foundations, significantly increasing speed.

[0019] Furthermore, the modular construction equipment and method for vertical rolling mill foundations disclosed herein allow for off-site construction and curing of the foundation after disassembly, ensuring concrete quality. Fixed formwork is used for casting, eliminating mold expansion and ensuring precise installation of embedded components and sleeves. This system requires minimal labor, is safe, reliable, and easily scalable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a modular vertical rolling mill foundation according to an embodiment of the present disclosure, which is used for modular construction equipment for a vertical rolling mill foundation and a construction method thereof;

[0021] Figure 2 A top view of the equipment foundation of an embodiment of a modular construction equipment for a vertical rolling mill foundation and a construction method thereof according to an embodiment of the present disclosure;

[0022] Figure 3 Schematic diagram of prefabricated columns for a modular construction equipment for a vertical rolling mill foundation and a construction method thereof according to an embodiment of the present disclosure;

[0023] Figure 4 Schematic diagram of prefabricated joists for use in modular construction equipment for a vertical rolling mill foundation and a construction method thereof according to an embodiment of the present disclosure;

[0024] Figure 5 A top view and a side view of prefabricated connecting special-shaped beams for use in a modular construction equipment for a vertical rolling mill foundation and a construction method thereof according to an embodiment of the present disclosure;

[0025] Figure 6 Schematic diagram of prefabricated connection special-shaped plates for use in a modular construction equipment for a vertical rolling mill foundation and a construction method thereof according to an embodiment of the present disclosure;

[0026] Figure 7 Schematic diagram of the connection between columns and base plates of a modular construction device for a vertical rolling mill foundation and a construction method thereof according to an embodiment of the present disclosure;

[0027] Figure 8 Schematic diagram of the connection between the joist and the variable neck column for the modular construction equipment and construction method of the vertical rolling mill foundation according to the embodiment of the present disclosure;

[0028] Figure 9 A schematic diagram of joist connection for a modular construction device for a vertical rolling mill foundation and a construction method thereof according to an embodiment of the present disclosure;

[0029] Figure 10 It is a top view of the modular rolling mill foundation used in the embodiment of the modular construction equipment and construction method of the vertical rolling mill foundation in the embodiment of the present disclosure.

[0030] Reference numerals: 1. platform foundation;

[0031] 2. Prefabricated columns; 2.1. Embedded steel plates; 2.2. Shear reinforcement; 2.3. Variable neck columns; 2.4. First reserved tensioning hole;

[0032] 3. Prefabricated joists; 3.1. Embedded sleeves; 3.2. Shear grooves; 3.3. Second reserved tensioning holes;

[0033] 4. Prefabricated connecting special-shaped beams; 4.1. The third reserved tensioning hole;

[0034] 5. Prefabricated connection of special-shaped plates; 5.1. Fourth reserved tensioning hole. DETAILED DESCRIPTION

[0035] The technical solutions of the present disclosure will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0036] The components of the embodiments of the present disclosure generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of the present disclosure.

[0037] Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present disclosure.

[0038] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this disclosure and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0040] See also Figures 1 to 10The present invention provides modular construction equipment for a vertical rolling mill foundation and a construction method thereof, including a platform foundation 1, a prefabricated column 2 is arranged on the upper surface of the platform foundation 1, the top of the prefabricated column 2 is connected to a prefabricated joist 3, and the prefabricated connecting special-shaped beam 4 and the prefabricated connecting special-shaped plate 5 are rigidly connected to the prefabricated joist 3.

[0041] An embedded steel plate 2.1 is provided at the bottom of the precast column 2. Shear reinforcement 2.2 is provided on the precast column 2 to increase friction and grip. A variable neck column 2.3 is provided on the precast column 2, and a first pre-reserved tensioning hole 2.4 is provided on the variable neck column 2.3. An embedded sleeve 3.1 is provided on the precast joist 3. A shear groove 3.2 is provided on the precast joist 3. A second pre-reserved tensioning hole 3.3 is provided on the precast joist 3, coaxially with the first pre-reserved tensioning hole 2.4. A third pre-reserved tensioning hole 4.1 is provided on the precast connecting special-shaped beam 4, coaxially with the second pre-reserved tensioning hole 3.3. A fourth pre-reserved tensioning hole 5.1 is provided on the precast connecting special-shaped plate 5, coaxially with the third pre-reserved tensioning hole 4.1.

[0042] Working principle: The specific construction or modification of the platform foundation 1, components such as Figure 2 As shown. Figure 3 As shown, according to the dimensions indicated in the drawing, four 200mm deep vertical foundation pits are dug out to serve as shear grooves 3.2. The dimensions of the foundation pits are 100mm larger than the dimensions of the prefabricated columns 2. An embedded steel plate 2.1 is placed at the bottom of the foundation pit for welding connection with the prefabricated columns 2.

[0043] like Figure 4 As shown, the embedded steel plate 2.1 is located at the bottom of the prefabricated column 2 and is welded to the steel plate on the shear groove 3.2 to increase overall stability. Shear reinforcement 2.2 is provided in all four directions of the prefabricated column 2, and the exposed length of the reinforcement is 40 mm, which increases the friction and gripping force of the connection of the prefabricated column 2 and ensures the stability of the column. The variable neck column 2.3 is larger at the top and smaller at the bottom, and the variable neck length is 400 mm shorter than the height of the prefabricated joist 3. The bottom of the prefabricated joist 3 falls on the variable neck column 2.3. The prefabricated joist 3 is embedded in the prefabricated column 2 to ensure the stability of the beam and the joint force of the column. The first reserved tensioning hole 2.4 is located at the center of the prefabricated connecting special-shaped beam 4 and the prefabricated connecting special-shaped plate 5, passing through the rolling mill foundation, and the prefabricated parts are tightly connected through tensioning, grouting, and anchoring.

[0044] like Figure 5 As shown, after the pre-embedded sleeve 3.1 is assembled, the mill anchor bolts are placed inside the pre-embedded sleeve 3.1 to secure the mill equipment. Shear grooves 3.2 are located on the underside of the precast joist 3 for securing the precast column 2. The underside of the shear grooves 3.2 rests on the precast column 2. The second reserved tensioning hole 3.3 is aligned with the tensioning hole on the variable cross-section of the precast column 2 and extends through the mill foundation.

[0045] like Figure 6 As shown, the prefabricated connecting special-shaped beam 4 is between two prefabricated joists 3, the third reserved tensioning hole 4.1 and the fourth reserved tensioning hole 5.1 are on the same axis, and the ribs on both sides of the prefabricated connecting special-shaped beam 4 are embedded in the corresponding prefabricated joists 3, so that multiple prefabricated joists 3 are connected into a whole.

[0046] like Figure 7 As shown, the prefabricated connecting profile plate 5 is inserted between two prefabricated joists 3, with plate ribs embedded on both sides to achieve fixation. The fourth reserved tensioning hole 5.1 secures the entire structure. During the renovation of the old factory building, four 200mm deep vertical pits were excavated in the platform foundation 1 and iron plates were laid in the pits.

[0047] Then the prefabricated column 2 is prefabricated off-site according to the optimized drawings. The embedded steel plate 2.1 is welded to the iron plate in the foundation pit. The shear steel bar 2.2 is close to the side wall of the foundation pit. The verticality and horizontality errors of the construction are measured with a total station or theodolite to meet the requirements. Before the prefabricated column 2 is installed, the surface of the variable neck column 2.3 is cleaned, and the filling in the first reserved tensioning hole 2.4 is cleaned to keep the hole unobstructed.

[0048] like Figure 8 As shown, check the flatness and size of the shear groove 3.2. If the deviation is large, it needs to be polished. The shear groove 3.2 is embedded in the variable neck column 2.3 to ensure that the first reserved tensioning hole 2.4 and the second reserved tensioning hole 3.3 are on the same axis and unobstructed.

[0049] like Figure 9 As shown, after all the prefabricated joists 3 are installed on the prefabricated columns 2, use a total station to check the flatness and verticality of the prefabricated joists 3, and whether the position of the embedded sleeve 3.1 is accurate, make local fine adjustments, and check whether the second reserved tensioning hole 3.3 and the first reserved tensioning hole 2.4 are on the same axis.

[0050] like Figure 10 As shown, the prefabricated connecting special-shaped beam 4 and the prefabricated connecting special-shaped plate 5 are embedded in the prefabricated supporting beam 3, ensuring that the third reserved tensioning hole 4.1, the fourth reserved tensioning hole 5.1 and the second reserved tensioning hole 3.3 are on the same axis to ensure that the line is unobstructed and can pass through the prestressed steel strand.

[0051] Finally, rigidly connect the prefabricated connecting special-shaped beams 4, prefabricated connecting special-shaped plates 5, and prefabricated joists 3. Use mortar to seal the gaps between the prefabricated joists 3, prefabricated connecting special-shaped beams 4, and prefabricated connecting special-shaped plates 5. Simultaneously, tension the prefabricated ...

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A modular construction device for a vertical rolling mill foundation, comprising a platform foundation (1), characterized in that: Prefabricated columns (2) are provided on the upper surface of the platform foundation (1); the top ends of the prefabricated columns (2) are connected to prefabricated support beams (3); prefabricated connection special-shaped beams (4) and prefabricated connection special-shaped plates (5) are rigidly connected to the prefabricated support beams (3); the prefabricated connection special-shaped beams (4) and prefabricated connection special-shaped plates (5) are embedded in the prefabricated support beams (3); the prefabricated connection special-shaped plates (5) are located between the two prefabricated support beams (3); An embedded steel plate (2.1) is provided at the lower portion of the prefabricated column (2), a shear reinforcement (2.2) for increasing friction and bond strength is provided on the prefabricated column (2), a variable neck column (2.3) is provided on the prefabricated column (2), and a first reserved tensioning hole (2.4) is provided on the variable neck column (2.3); The prefabricated joist (3) is provided with an embedded sleeve (3.1), the prefabricated joist (3) is provided with a shear groove (3.2), and the prefabricated joist (3) is provided with a second reserved tensioning hole (3.3) coaxial with the first reserved tensioning hole (2.4).

2. The modular construction equipment for vertical rolling mill foundation according to claim 1, characterized in that: The prefabricated connecting special-shaped beam (4) is provided with a third reserved tensioning hole (4.1) on the same axis as the second reserved tensioning hole (3.3).

3. The modular construction equipment for vertical rolling mill foundation according to claim 1, characterized in that: The prefabricated connecting special-shaped plate (5) is connected to a fourth reserved tensioning hole (5.1) on the same axis as the second reserved tensioning hole (3.3).

4. A construction method for modular construction equipment for a vertical rolling mill foundation according to any one of claims 1 to 3, characterized in that The following steps are involved: Step 1: Make the platform foundation (1); Step 2: Place the embedded steel plate (2.1) at the bottom of the foundation pit and weld it to the steel plate on the shear groove (3.2). Then, set shear reinforcement (2.2) in all four directions of the prefabricated column (2); Step 3: Insert the prefabricated joist (3) into the variable neck column (2.3), the first reserved tensioning hole (2.4) is located at the center of the prefabricated connecting special-shaped beam (4) and the prefabricated connecting special-shaped plate (5), and the rolling mill foot bolt is placed in the embedded sleeve (3.1) to ensure that the shear groove (3.2) is located at the lower side of the prefabricated joist (3) and fixed to the prefabricated column (2); Step 4: The second reserved tensioning hole (3.3) and the first reserved tensioning hole (2.4) on the variable cross-section of the prefabricated column (2) are on the same center line, the second reserved tensioning hole (3.3) and the tensioning holes of other components are on the same straight line, and the prefabricated connecting special-shaped plate (5) is firmly formed into a whole between the two prefabricated supporting beams (3) through the second reserved tensioning hole (3.3); Step 5: Clean the surface of the variable neck column (2.3), keep the first reserved tensioning hole (2.4) unobstructed, and check the flatness and size of the shear groove (3.2) to ensure that it is on the same axis; Step 6: Finally, install all the prefabricated joists (3) to the prefabricated columns (2), then embed the prefabricated connecting special-shaped beams (4) and the prefabricated connecting special-shaped plates (5) into the prefabricated joists (3), check whether the welding between the platform foundation (1) and the embedded steel plate (2.1) is deformed or de-welded, and fill with grouting material if the requirements are met.

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